Punch-cutting or engraving apparatus.



No 822,089. PATENTED MAY 29, 1906 F. WIGKS. PUNCH CUTTING 0R BNGRAVING APPARATUS.

APPLICATION FILED MAR-7, 1905.

Wade/78% M56250 W I 7 I Wa /W 6 ANDRiW a camp: on. Pnow-umnumwms. wAsmuamn, n. c.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

PatentedMay 29, 1906.

Application filed March 7, 1905. Serial No. 248,811.

To all whom it may concern:

Be it known that I, FREDERICK WIoKs, a subject of the King of Great Britain, residing at Halfway Lodge, Esher, in the county of Surrey, England, have invented certain new and useful Improvements in Punch-Cutting or Engraving Apparatus, of which the following is a specification. v

This invention relates to apparatus for punch-cutting such as are used in the typographical art or for engraving reductions of designs generally, and has for its object to correct the defects existing in similar apparatus hitherto in use, and more particularly to enlarge the range of reduction and increase the rapidity with which the work can be done.

According to this invention the engravingtool or punch is always presented when working to a fixed point, and the piece of metal to be engraved is arranged to be movable with respect to this point. This movement is effected by means of the tracer, with which the piece of metal is suitably connected, as it is moved over the design, and the tracer-pivot is made adjustable, so' that the ratio of the movement of the point of the tracer to that of the piece of metal may be varied as may be desired.

The invention is illustrated in the accompanying drawings, in which Figure 1 is an elevation of the improved apparatus Fig. 2, a section on line 2 2 of Fig. 1, and Fig. 3 a part elevation showing the tracer-pivot lowered to another position.

The table a, on which the design to be reproduced is placed, is supported between the limbs b of a frame, the upper part of which carries guides c, in which is mounted a second frame (1.

The piece of metal 6 to be engraved is secured by any suitable means in the frame d, which is movable in its guides in such a way that the face of the metal block e remains parallel to the surface of the table a.

The movable frame d is suitably connected with one end of the tracing-rod as by means of a ball-and-socket connection 9, and the other end of the tracing-rod, which is preferably made telescopic and adjustable by means of the milled nut h, is adapted to trace out the design placed on the table a.

The tracing-rod is pivoted with respect to the frame by means of a ball i, which is arranged to slide along the rod, and is supported in a corresponding socket formed in a block 7c,

tuted when a finer adjustment is required. I

In both cases a suitable locking device may be added to secure the cross-head in the position to which it has been set.

The two ball-and-socket joints are arranged so that in one position of the crosshead their centers are coincident, in which position there will be no movement of the movable frame at consequent on the movement of the tracer. As the cross-head is moved from this position toward the point of the tracer the ratio of the movement of the movable frame to that of the point of the tracer will be increased correspondingly.

The engraving-tool g may be held in a chuck r and have motion imparted to it by an ordinary lathe-head driving-pulley s, which is carried in bearings supported from the main frame of the machine by arms 25, projecting within the movable frame.

Having thus particularly described and ascertained the nature of my said invention and the best means I know of carrying the same into practical eifect, I claim- In an apparatus of the character described, a fixed table, a frame movable in a plane parallel to the table, a plate carried by the frame, a pivoted tracer adapted to be moved over said table, a ball-and-socket joint connecting the movable frame and tracer, a second ball-and-socket joint connecting the tracer with its pivot-support, and means for varying the distance between the centers of the two ball-and-socket joints continuously from zero to an appreciable amount, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK WIcKs Witnesses GEO. HOUGHTON, CHARLES MAROUSSEN. 

